Essays about: "utmattningsgräns"
Found 2 essays containing the word utmattningsgräns.
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1. Life and fracture in very high cycle fatigue of a high strength steel
University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Abstract : Classical fatigue models teach that there is an intrinsic fatigue limit for steels, representing a level of stress that is too low for regular crack growth where every cyclic load propagates a fatigue crack through the material. Modern application with extreme lifetimes has shown that fatigue will still take place in steels with stress levels well below the expected fatigue limit. READ MORE
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2. Modelling the influence of porosity on fatigue strength of sintered steels
University essay from Uppsala universitet/StrukturkemiAbstract : The pores in pressed and sintered components constitute weak points in the material since the stress concentration is larger than the nominal stress there. Therefore, fatigue cracks initiate at the pores. Specifically, it can be assumed that the fatigue cracks initiate at the largest pore in the stressed volume. READ MORE